Thread adapter made of PP, PVDF or PFA - loose GL-nut

Thread adapter made of PP, PVDF or PFA - loose GL-nut

Product specification External thread on one side, loose union nut with GL thread and O-ring... more

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Product specification

External thread on one side, loose union nut with GL thread and O-ring on the other side.

The glass thread adapter serves as a connecting element between a laboratory glass cylinder with GL thread and a G external thread.

The adapter is designed for a maximum of 6 bar (at +20 °C).

General Information The glass thread adapter G3 serves as a connecting element between the... more

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General Information

The glass thread adapter G3 serves as a connecting element between the laboratory glass cylinder with GL thread and either a hose or pipe connection or a external G-thread.

The adapter has on the one hand the rotatable union nut with GL thread, on the other hand a external G-thread, a hose or pipe connection, so that there are various connection options.

Available in PP, PVDF or PFA (high-quality materials) for chemically demanding applications.

The GL union nut is made of PBT (polybutylene terephthalate) with 30 % glass fiber.

An O-ring made of FPM is used for sealing, which can also be exchanged for EPDM or FFKM on request.

PP (Polypropylene)

Extremely good impact toughness and notch impact strength

Higher hardness and stiffness as well as better resilience than PE

Thermoforming possible

Very good dielectrical properties

Good resistance to alcohols, ketones, conc. acids and alkalis

Not stable to aromatic hydrocarbons, fats and oils, halogenes

Autoclavable

Resistant to hydrolysis

Physiologically safe

Regulatory compliance to FDA 21 CFR 177.1520, RoHS, BPA-free, DEHP-free, BSE/ADI-free

Colour: grey

Density: 0.90 g/cm³

Temperature range: +5 to +90 °C

Shore hardness D: 72°

Max. operating pressure: 6 bar at +20 °C

Water absorption: <0.05 %

Tensile strength: 25 - 40 N/mm²

Elongation at break: 800 %

Surface resistance: >10¹³ Ohm

Melt flow index MFR: 0.3 g/10 min.

PVDF (Polyvinylidene fluoride)

High-quality technical plastic for chemical apparatus and machine building, especially in the petrochemical, metallurgical, pharmaceutical, food processing, paper and textile industry as well as in the nuclear technology.

High impact toughness even at low temperatures

Good breakdown strength

Low dielectric loss factor

Highest mechanical stability and stiffness

Meeting highest purity requirements

Comply with the guidelines from FDA and USP class VI, additionally PVDF has the KTW approval. Up to +150 °C it is non-toxic and since it has a similar property to glass it is a no-culture medium for microorganisms.

Can be treated by autoclave (absolute sterile) and sterilized with gamma-rays without losing its mechanical qualities

Outstanding resistance to UV, weather and aging

Flame-resistant

High thermal stability

Resistant to alcohols, fats and oils, halogenes, alkalis, acids

Not stable to aromatic hydrocarbons, ketones, amines, pyridine, dimethylformamide, hot alkalis, fuming sulfuric acid

Colour: nature, slightly translucent

Density: 1.75 g/cm³

Temperature range: -40 to +140 °C

Shore hardness D: 79°

Max. operating pressure: 6 bar at +20 °C

Water absorption: <0.04 %

Tensile strength: 38 - 50 N/mm²

Surface resistance: >10¹³ Ohm

Melt flow index MFR: 6 g/10 min.

PFA (Perfluoroalkoxy)

High-quality technical plastic for chemical apparatus and machine construction as well as electrical engineering

Chemical, thermal and dielectrical properties practically such as PTFE, but suitable for thermoplastic processing (welding, die casting, deep drawing). Lower medium diffusion, better transparency, larger hardness and better dimensional stability (lower tendency to cold flow) compared to PTFE.

Highest temperature resistance of all meltable fluorinated plastics

Very high dimensional stability in heat

Very high resistance to media

Very good pressure resistance

Low friction coefficient

Can be treated by autoclave (absolute sterile)

Comply with the guidelines from FDA and USP class VI.

Excellent resistance to weather

Flame-resistant

Colour: milky, translucent

Density: 2.10 g/cm³

Temperature range: -200 to +200 °C (highest dimensional stability in heat)

Shore hardness D: 60° to 65°

Max. operating pressure: 6 bar at +20 °C

Coefficient of sliding friction: 0.2 - 0.3 (dynamic against steel, dry)

Tensile strength: 27 to 32 N/mm² at +23 °C

Water absorption: <0.03 %

Dielectric constant: 2,1

Surface resistance: >10¹⁷ Ohm

FPM (Fluorinated rubber)

FPM is a polymer of highest quality made of fluorinated hydrocarbons (fluorine content 64 % to 70 %) and belongs to the group of elastomers

FPM has the best resistance to swelling in mineral oils compared to all elastomers

Highest sealing force in continuous operation (after 100 h at +150 °C in air still 90 % of the initial sealing force)

Lowest evaporation rates at high vacuum

Low permeability to gas

Outstanding radiation resistance

Excellent chemical and physical properties, almost identical to those of PTFE. The essential difference compared to PTFE is the lower cold flow, lower diffusion and better transparency.

High chemical resistance to many chemicals, ozone, heat and weather.

Unstable to polar solvents such as ketones and esters (considerable swelling), organic acids (acetic acid or formic acid), strong bases such as amines (chemical attack).

Not suitable for applications at temperatures below -20 °C as well as in hot steam.

Colour: black

Density: 1.10 g/cm³

Temperature range: -30 to +220 °C, for a short time +300 °C

Water absorption: no data

Tensile strength: 13 N/mm²

Elongation at break: 450 %

Shore hardness A: 75°

Surface resistance: no data

Item	Image	External thread	Innengewinde	D1 mm	l mm	L mm	SW mm	Werkstoff	Einheit Stück	Price Euro*
341945		G 1/8"	GL14	20	8	32	8	PP	1	20.00
341946		G 1/8"	GL14	20	8	32	8	PVDF	1	22.00
341947		G 1/8"	GL14	20	8	32	8	PTFE	1	38.00
341948		G 1/8"	GL18	24	8	31	11	PP	1	20.00
341949		G 1/8"	GL18	24	8	31	11	PVDF	1	22.00
341950		G 1/8"	GL18	24	8	31	11	PFA	1	38.00
341951		G 1/8"	GL25	33	8	35	14	PP	1	20.00
341952		G 1/8"	GL25	33	8	35	14	PVDF	1	22.00
341953		G 1/8"	GL25	33	8	35	14	PFA	1	39.00
341954		G 1/8"	GL32	42	8	39	18	PP	1	32.00
341955		G 1/8"	GL32	42	8	39	18	PVDF	1	35.00
341956		G 1/8"	GL32	42	8	39	18	PFA	1	60.00
341957¹	Thread adapter made of PP, PVDF or PFA - loose GL-nut	G 1/4"	GL18	24	20	35	14	PP	1	22.00
341958¹	Thread adapter made of PP, PVDF or PFA - loose GL-nut	G 1/4"	GL18	24	20	35	14	PVDF	1	25.00
341959¹	Thread adapter made of PP, PVDF or PFA - loose GL-nut	G 1/4"	GL18	24	20	35	14	PFA	1	43.00
341960		G 1/4"	GL25	33	12	39	16	PP	1	22.00
341961		G 1/4"	GL25	33	12	39	16	PVDF	1	25.00
341962		G 1/4"	GL25	33	12	39	16	PFA	1	43.00
341963		G 1/4"	GL32	42	12	43	21	PP	1	23.00
341964		G 1/4"	GL32	42	12	43	21	PVDF	1	25.00
341965		G 1/4"	GL32	42	12	43	21	PFA	1	44.00
341966		G 1/4"	GL45	55	12	45	28	PP	1	36.00
341967		G 1/4"	GL45	55	12	45	28	PVDF	1	40.00
341968		G 1/4"	GL45	55	12	45	28	PFA	1	70.00
341969²		G 3/8"	GL18	24	12	35	14	PP	1	32.00
341970²		G 3/8"	GL18	24	12	35	14	PVDF	1	35.00
341971²		G 3/8"	GL18	24	12	35	14	PFA	1	60.00
341972		G 3/8"	GL25	33	12	39	16	PP	1	32.00
341973		G 3/8"	GL25	33	12	39	16	PVDF	1	35.00
341974		G 3/8"	GL25	33	12	39	16	PFA	1	60.00
341975		G 3/8"	GL32	42	12	43	21	PP	1	35.00
341976		G 3/8"	GL32	42	12	43	21	PVDF	1	39.00
341977		G 3/8"	GL32	42	12	43	21	PFA	1	69.00
341978		G 3/8"	GL45	55	12	45	28	PP	1	44.00
341979		G 3/8"	GL45	55	12	45	28	PVDF	1	50.00
341980		G 3/8"	GL45	55	12	45	28	PFA	1	87.00
341984		G 1/2"	GL32	42	14	54	22	PP	1	43.00
341985		G 1/2"	GL32	42	14	54	22	PVDF	1	48.00
341986		G 1/2"	GL32	42	14	54	22	PFA	1	84.00
341987		G 1/2"	GL45	55	14	47	28	PP	1	39.00
341988		G 1/2"	GL45	55	14	47	28	PVDF	1	43.00
341989		G 1/2"	GL45	55	14	47	28	PTFE	1	76.00